Rotary planer attachment



Nov. 18, 1952 R, w, HYMAN 2,618,203

ROTARY PLANER ATTACHMENT Filed July 25,}949 2 SHEETS-SHEET l I n venlor Robert W Hyman By MM 3? Nov. 18, 1952 w, HYMAN 2,618,203

ROTARY PLANER ATTACHMENT Filed July 25, 1949 2 SHEETS-SHEET 2 l6 Fig. 2.

Fig. 6. 48 46 I Fig. 2 I' 50 I I j 40 54 40 54 40 Fig. 8.;

40 Inventor 36 Robert W. Hyman Patented Nov. 18, 1952 UNITED STATES PATENT OFFICE;

aomavxrnanne ATTACHMENT RobertIWJHymamAshIand, Application Ji'ily25, 1949; Serial No. 106,643

v This, invention. .melatesflto newsand-guseful provements and structural refinements gin. at-f tachments for. planets, and the principal object of the'invention is to facilitate shaping of curvilinear work, such as. for example, forming arouate recesses, and the like.

' This object is achieved by the provision of'the instant attachment wherein means are provided for moving; the tcuttinggtooli in arrotary manner, thus facilitating the formation of the required curvilinear configuration.

One of the features of the invention, therefore. residesin theprovision of a; device of this nature whicluin themanner of an attachment, is. adapt.-

ed to" be applied to any conventional planer,

tures as may become apparent as this specification proceeds, the invention consists essentially of the arrangement and construction of parts as illustrated in the accompanying drawings, in

which:

' Figure 1 is a fragmentary side elevational view of a conventional planer showing the invention in situ thereon;

Figure 2 is a fragmentary front elevational view of the subject shown in Figure 1;

Figure 3 is a side elevational view of the carrier and arbor used in the invention;

Figure 4 is a top plan view of the rotary head used therein;

Figure 5 is a cross sectional detail, taken substantially in the plane of the line 5-5 in Figure 4;

Figure 6 is a fragmentary top plan view of the rotary head and cutting tool;

Figure '7 is a fragmentary cross sectional detail, taken substantially in the plane of the line 1--'! in Figure 6, and

Figure 8 is a front elevatio-nal view of the subject shown in Figures 6 and '7.

Like characters of reference are employed to designate like .parts in the specification and ciprocable bed l2. a vertically movable cross rail 2 :Claims (Cl. 90-9-31) l'4'op'erated'by the usual means l6, andasaddle: l-8' 'movable horizontally on the crossrail by a conventional cross feed mechanism aswill'. be

clearly apparent.

The cutting tool, in accordancewith converr tional practice; is mounted on the saddle; but

in accordance with the instant invention an at, tachment designated generally by the-reference character -22' .is employed, this consisting-of a carrier 24 which is slidable vertically in .a.:set of guides 26 provided-on a'vertical'ly elongated plate or bracket 28whic'h is secured to thesaddle I8as at '30, a suitable feed screw 32 being-em? ployed for-adjusting the carrier relative to 'the" tained in position thereon by a pair of diametrically opposed set screws 40, bearing against a pair of anti-friction bearings or spheres 42 (see Fig. 5). These spheres are rotatably disposed in suitable recesses 44 with which the head 36 is provided, and by simply tightening the set screws 40, the spheres 42 are urged into an annular groove 46 formed in the arbor 34, so that the head is rotatably and removably retained in position on the arbor.

The free end portion of the head 36 is equipped with dovetailed guides 46 to accommodate a slide 48, the latter being adjustable transversely of the axis of the arbor 34 by means of a feed screw 50 extending through suitable apertures 52 with which the free end portion of the head 36 is formed.

A tool holder 54 is pivotally connected to the slide 48 as at 56 and carries a conventional cutting tool 58 which, in accordance with conventional practice, is urged to its operative position by a tension spring 60 extending between the holder 54 and the head 36, as is best shown in Figure 7.

Finally, it is to be noted that means are provided for rotating the head 36 about the axis of the arbor 34, these means involving the provision of a toothed annulus 62 which is welded or otherwise suitably secured to the head 36 and meshes with a toothed rack 64 which is reciprocably mounted on the carrier 24, being retained in engagement with the annulus 62 in any suitable manner, such as for example, by a guide roller 66 with which the carrier 24 is provided. It is to be noted that one end of the rack 64 is equipped with an actuating handle 68.

When the invention is placed in use, the work 10 may be clamped to the bed l2 as indicated at 12, whereupon the feed mechanisms 16, 20, 32 and 50 may be adjusted so that the cutting;tool 58 engages the work, as will be clearly apparent. The planing operation may then be commenced, and reciprocation of the bed I2 will, of course, cause the cutting tool 58 to shape the work in longitudinal cutting strokes. However, the scope of the shaping operation is substantially enhanced by the invention, inasmuch as by simply sliding the rack 64 in one direction or the other, rotation may be imparted to the head 3'6 and to the tool 58, so that the tool actually shapes or forms a curvilinear surface on the work, as indicated at 14 in Figure 2. Needless to say, the curvature or radius of this curvilinear surface may be adjusted or varied by simply setting the feed screw 50, thus increasing or decreasing the distance of the outer end of the cutting tool 58 from the axis of the arbor 34. I

It is believed that the advantages and use of the invention will be clearly understood from the foregoing disclosure and accordingly, further description thereof at this point is deemed unnecessary.

While in the foregoing there has been shown and described the preferred embodiment of this invention, it is to be understood that minor changes in the details of construction and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as claimed.

Having described the invention, what is claimed as new is:

In a planer, the combination of a saddlei a vertically adjustable carrier provided on said saddle, a substantially horizontal arbor secured at one end thereof to said carrier, a substantially cylindrical head rotatable on said arbor, a cutting tool mounted on said head, means for rotating said head for adjusting the position of said cutting tool relative to said arbor, means mounting said head on said arbor including bearings disposed in recesses in said head and located'in a groove in said arbor, and adjustment screws contacting the bearings to hold said bearings in said groove.

2. The device as defined in claim 1 wherein said first mentioned means include a toothed annulus provided on said head, and a toothed rack reciprocably mounted on said carrier, said rack operatively engaging said annulus.

ROBERT W. HYMAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name I Date 71,401 Meinhard Nov. 26, 1867 534,827 Green Feb. 26, 1895 560,281 Ranhofi May 19, 1896 2,105,237 Welsch Jan. 11, 1938 

